1#!/bin/sh 2# Arnaldo Carvalho de Melo <acme@kernel.org>, 2017 3 4perf probe -l 2>&1 | grep -q probe:vfs_getname 5had_vfs_getname=$? 6 7cleanup_probe_vfs_getname() { 8 if [ $had_vfs_getname -eq 1 ] ; then 9 perf probe -q -d probe:vfs_getname* 10 fi 11} 12 13add_probe_vfs_getname() { 14 add_probe_verbose=$1 15 if [ $had_vfs_getname -eq 1 ] ; then 16 line=$(perf probe -L getname_flags 2>&1 | grep -E 'result.*=.*filename;' | sed -r 's/[[:space:]]+([[:digit:]]+)[[:space:]]+result->uptr.*/\1/') 17 perf probe -q "vfs_getname=getname_flags:${line} pathname=result->name:string" || \ 18 perf probe $add_probe_verbose "vfs_getname=getname_flags:${line} pathname=filename:ustring" 19 fi 20} 21 22skip_if_no_debuginfo() { 23 add_probe_vfs_getname -v 2>&1 | grep -E -q "^(Failed to find the path for the kernel|Debuginfo-analysis is not supported)|(file has no debug information)" && return 2 24 return 1 25} 26 27# check if perf is compiled with libtraceevent support 28skip_no_probe_record_support() { 29 if [ $had_vfs_getname -eq 1 ] ; then 30 perf record --dry-run -e $1 2>&1 | grep "libtraceevent is necessary for tracepoint support" && return 2 31 return 1 32 fi 33} 34